If you could offer one piece of advice to new UE4 Users…
Would be to jump in and start using it! No matter your current skill or specialty. Locate the Documentation, Set up Source Control, Follow along the Tutorials & Samples. Run into trouble? Search UE4 Answer Hub, Forum, Google first (instant gratification when you find the answer on your own). Once you know how to use the UnrealEd Tool Suite, you’ll know exactly what it takes to build your game with UE4.
As a long time programmer, I enjoy using Blueprints. I’m now learning content creation: Modeling, Texturing and Animation in UE4 and I’m having fun! I’m totally convinced that UE4 Can do anything, and you will be too.